[FFmpeg-trac] #7510(undetermined:new): Streamcopy of private stream produces empty output

[FFmpeg]

#7510: Streamcopy of private stream produces empty output
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             Reporter:  msiders      |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  git-master   |  undetermined
             Keywords:               |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
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Comment (by msiders):

 Replying to [comment:2 Gyan]:
 > Try adding `-copy_unknown`.

 Hi Gyan,


 {{{
 % ffmpeg \
  -f mpegts -i file.ts -copy_unknown \
  -map i:100 -map i:101 -map i:105 -map i:109 \
  -c:2 copy \
  -c:3 copy \
  -f mpegts file-out.ts
 }}}


 It doesn't work!
 For any reason I can't understand, the mpegts muxer doesn't write any data
 from streams with a type different than audio/video/teletext/subtitles.

 Any idea to fix this problem?

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Ticket URL: <https://trac.ffmpeg.org/ticket/7510#comment:3>
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